Method of and apparatus for strapping boxes



Oct. 7 1924. 1,510,484

J. w. LEsLl;

METHOD OF AND APPARATUS FOR STRAPPING BOXES Filed Aug. 2, 1921 fay 9% Patented Oct. 7, 1924.

UNITED STATES PATENT OFFICE.

JOHN W. LESLIE, OF EVANSTON, ILLINOIS.

METHOD OF AND APPARATUS FOR STRAPPING BOXES.

Application filed August .2, 1921. Serial No. 489,366. i

apparatus for applying tensional binders such as metallic box strapping or the like to boxes and packages in a novel and efficient manner; and to apparatus suitable for the practice of such method.

In the application of tensional binders to boxes and packages, speedis a very important consideration.

The invention herein described very much increases the speed of application of tensional binders by eliminating the most laborious part of the work heretofore necessary, namely the passing of the binder around a box or package prior to overlapping its ends, tightening it and forming a joint.

In the drawings Fig. 1 is a side elevation of a strapping bench used in connection with the invention Fig. 2 is a front elevation thereof,

Fig. 3 is a diagrammatic view, illustrating the method of the invention,

Fig. 4 is a side elevation of a clip used in connection with the invention, and

Fig. 5 is a longitudinal section therethrough.

In order to eliminate the passin of the binder around a@ box 1,. I arrange tie box 1 adjacent to andhaving the axis around which the binder is to be applied in. the same eneral direction as that of the axis of coi 2 of strap. Strapping and other binder material is supplied in coils. The binder must therefore be drawn from the coil and applied tothe box or package. The

. free end 3 of. the coil is held for convenience in a clip 4, later described, and a platform 5 at one end of the box is providedto hold the same in the position shown in Fig.1. The other end of the box may be supported by any suitable means (not shown).

With the parts in this position the operator taking the. free end 3 of the strap in one hand and an intermediate portion 6 of its length in the other, simply moves a loop or convolution of this strap sidewise from the coil to its proper position on the box. He then overlaps the ends, in the fashion indicated in dotted lines in Fig. 3 and proceeds to tighten and join the strap in the ordinary way, after which the strap on the coil side of the oint is broken off at the joint, the free end replaced in the clip 4, the box turned about to present its other end for the same operation, or, where 7 only one strap is placed about the box, a new box substituted to be treated in the same way.

By this means the operator, by simply withdrawing the convolution, preferably from the inside of the coil, and having the box and coil in propergrelative position,

shifts the convolutions already formed in the coil, one by one, sidewise tothe proper position on the box, and the hitherto timeconsuming operation of revolving the entire coil, cutting off a strip of suit-able length and passing the strap endwise about the box is completely eliminated. v

I shallnow describe a stand useful for the practice of the foregoing method, certain parts of which stand have-previously been referred to. j

I provide a stand 7, preferably mounted on casters 8, in which is mounted an arm 9,

sloping outwardly and horizontally adjustable by the pin 10 and apertures 11, the arm 9 also being adjustable, so that it can be tilted more or less by the brace 12, adjustable by the pin 13 and apertures 14.

The arm 9 has at its end a clip 4, pre:

viously referred to, which comprises a supporting bar 15 which is secured to the arm 9 by the screws 16. A spring tongue 17 is likewise secured to the arm 9 by the screws 16, and its outer end carries a block 18 from the outer end of ,which projects a shaft 19. A roller. 20' is rotatably mounted upon the shaft 19, the ends of which are tapered in opposite directions, as shown in Fig. 5, to permit the roller to oscillate slightly about a transverse axis. The upper side of the outer end of the bar 15 is beveled, as shown at 21', so as to permit the strip 3 to be easily inserted between the roller 20 and the bar 15. r

A tubular guideway 22 is secured to the end of the arm 9 by the strap 23 and its lower end holds a quantity of oil-saturated The tool used for tightening a strap section about a box or package holds the two overlapping portions of the strap under comparatively high pressure during the tensioning process; consequently, there is considerable frictionalresistance to the sliding of the sections upon each other. By providing the lubricating clip described above the free end of the strap can be lubricated by merely pulling a portion of it beneath the roller 20' so that when this end of the strap is overlapped upon an intermediate portion during the tensioning process, the friction resistance will be very considerably reduced.

Mounted on the stand is a platform 5 adapted to support one end of a box or )ackage, the other end of which may be supported on any convenient bench. The stand is further provided with a box 26 and a shelf 27 for reinforcing girths, tools or the like.

This stand can very quickly be run up to the proper distance from a fixed support, as a bench or the like, then boxes can be quickly placed with one end resting on the support 5 and the other on the bench, the strap applied, in a very few seconds in the manner illustrated in Fig. 3, the box then turned around end for end, another binder applied, the box removed and a new box placed in its place and so on in rapid succession. The use of the foregoing method, and apparatus in the practice of the foregoing method, has been found very efficient to shorten the time necessary for the application of tensional binders to boxes and packages.

Having thus described my invention, 1 claim 1. A method of strapping boxes and the like, which consists in arranging a coil of strapping, and a box to be strapped adjacent each other, the strapping axis of the box parallel to the axis of the coil, and in then transferring a loop of strap from the coil to the box, by relatively threading the box through the loop, thereafter tightening said loop as a binder on'the box and joining its ends.

2. A. method of applying tensional binder material to boxes or the like, which consists in suspending a coil of the binder material adjacent the end of a box, and in transferring a loop sidewise from the coil, along the axis of the coil to a position where it extends around the box, and in tightening and joining said loop about the box.

3. Apparatus useful. for applying tensional binding material to boxes and the like, comprising a stand having thereon a support adapted to receive a coil of binding material and maintain the same in approx so relatively arranged than an inner convolution of the coil may readily be transferred from the coil to a box on the boxsupport. a

'6. In apparatus of the class described, and in combination, a coil support adapted to support a coil in approximately upright position, an arm extending; through the coil, and a clip on the arm.

7 In apparatus of the class described, and

in combination, a coil support adapted to support a coil in approximately upright position, an arm extending through the coil, and inclined upwardly, and a clip on said arm.

8. ln apparatus of the class described, and in combination, coil support adapted to support a coil in approximately upright position, an arm extending throi'igh the coil. freely, a clip on said arm, and a support for a box arranged adjacent the coil support and adapted to support one end of a box in position adjacent the coil so that loops of the coil may be transferred sideways to the box.

9. In apparatus of the class described, and in combination, a coil support adapted to support a coil in approximately upright position, an arm having a clip projecting through the coil, and a support for a box and projecting through the coil on said coil support.

10. In apparatus of the class described and in combination, a coil support including an arm adapted to project through the coil, a clip for a strap. end, and a box support adjacent said arm, all so relatively ranged that convolutions of the coil may readily be transferred to the box by moving them along the coil axis.

11. The combination with a frame for supporting a coil in approximately upright position of an arm having a clip for securing the free end of the coil, the said clip comprising; means for holding said free end and for lubricating it as it is withdrawn from said clip.

In witness whereof, I hereunto subscribe my name this 6th day of June, A. D. 1921..

- JOHN W. LESLIE.

Witness:

OLIVER H. PARMELEE. 

